CVE-2007-6222 in Interleave
Summary
by MITRE
The CheckCustomerAccess function in functions.php in CRM-CTT Interleave before 4.2.0 (formerly CRM-CTT) does not properly verify user privileges, which allows remote authenticated users with the LIMITTOCUSTOMERS privilege to bypass intended access restrictions and edit non-active user settings. NOTE: some of these details are obtained from third party information.
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Analysis
by VulDB Data Team • 09/12/2018
The vulnerability identified as CVE-2007-6222 resides within the CheckCustomerAccess function in the functions.php file of CRM-CTT Interleave software versions prior to 4.2.0. This represents a critical authorization bypass flaw that undermines the security model of the customer relationship management system. The issue stems from insufficient validation of user privileges during access control checks, specifically affecting the LIMITTOCUSTOMERS privilege which should restrict user actions to predefined customer parameters.
The technical implementation flaw occurs when the CheckCustomerAccess function fails to properly validate whether authenticated users possess appropriate authorization levels for accessing or modifying customer settings. This function serves as a critical access control mechanism within the application's security framework, yet it contains a logic error that allows malicious users with the LIMITTOCUSTOMERS privilege to circumvent intended access restrictions. The vulnerability specifically enables these users to edit settings for non-active customers, which violates the principle of least privilege and potentially exposes sensitive customer data.
Operationally, this vulnerability creates significant risks for organizations using CRM-CTT Interleave systems, particularly those handling sensitive customer information. Remote authenticated users who possess the LIMITTOCUSTOMERS privilege can exploit this flaw to access and modify customer settings beyond their intended scope, potentially leading to unauthorized data manipulation, privacy violations, and compliance breaches. The impact extends beyond simple data access as it allows for potential modification of customer configurations that could affect business operations and customer relationships.
The vulnerability aligns with CWE-285, which addresses insufficient authorization in software systems, and demonstrates how improper access control implementation can create security gaps even when basic authentication mechanisms are functioning correctly. From an adversary perspective, this flaw represents a privilege escalation opportunity that can be leveraged through legitimate user accounts, making detection more challenging as the actions appear to originate from authorized users. The ATT&CK framework categorizes this under privilege escalation techniques where attackers exploit application-level access control weaknesses to gain broader system access.
Organizations should immediately implement mitigations including upgrading to CRM-CTT Interleave version 4.2.0 or later, which contains the necessary access control fixes. Additionally, administrators should review and audit existing user privilege assignments to minimize the impact of compromised accounts with LIMITTOCUSTOMERS privileges. Network segmentation and monitoring of administrative activities can help detect unauthorized access attempts. Regular security assessments of web applications should include thorough review of access control mechanisms, particularly functions that handle privilege verification and user authorization checks, to prevent similar vulnerabilities from persisting in the system architecture.